It seems the "hasbro design team" were all working independently when they were coming up with those saga bases. The headless Tusken, Aayla Secura, Bariss Offee, Coleman Trebor and Lars Homestead Padme, all link together or to themselves.
You can chain the Wat Tambor Bases together if you had 9 or 10 laying around that might look cool.
The Secret Ceremony Padme base would look better if you could connect another one like it forming a gentle arc, rather than the bow of a ship.
Bail is left holding his plastic pud with no one in interlock to
Maybe they could have included a modfied one with Sly Moore